Improvement in writing-inks



EDWARD FQWAL SH .AND SANFORD DURYEA, OF BROOKLYN, NEW YORK.

IMPROVEMENT [N WRITING-INKS.

Specification forming part of Letters Patent No. 115,915, dated June 13, 1871.

We, EDWARD F. WALSH and SANFORD DURYEA, of the city of Brooklyn, Kings county, and State of New York, have invented a, Carbon Writing-Ink and a certain process for making said ink, by which process the suspension of carbon in writing-ink is secured, and the result is a. writing-ink indestructible and non-erasible uponpaper without destroying the paper upon which it is written, of which the following is a specification:

Take one (1) ounce of shellac, three-quarters (g) of an ounce of hora-x, sixteen (16) ounces of water, and mix them together. Boil the same until dissolved, and then add snflicient pulverized carbon to make aproper color or a color to suit.

By this invention the carbon is suspended, and, when applied, is firmly attached to the paper.

What we claim, and desire to secure by Letters Patent of the United States, is-

The compound denominated writing-ink, of

the in redients, in the proportions, and for the I: purposes set forth.

, EDWARD F. WALSH. itnesses: SANF. DURYEA.

JOHN Lown, JAcon MORRIS. 

